package main

import (
	"fmt"
	"github.com/patrickmn/go-cache"
	"time"
)

func main() {
	// Create a cache with a default expiration time of 5 minutes, and which
	// purges expired items every 10 minutes
	c := cache.New(5*time.Minute, 10*time.Minute)

	// Set the value of the key "foo" to "bar", with the default expiration time
	c.Set("foo", "bar", cache.DefaultExpiration)

	// Set the value of the key "baz" to 42, with no expiration time
	// (the item won't be removed until it is re-set, or removed using
	// c.Delete("baz")
	c.Set("baz", 42, cache.NoExpiration)

	// Get the string associated with the key "foo" from the cache
	if foo, found := c.Get("foo");found{
		fmt.Println(foo)
	}


	// Since Go is statically typed, and cache values can be anything, type
	// assertion is needed when values are being passed to functions that don't
	// take arbitrary types, (i.e. interface{}). The simplest way to do this for
	// values which will only be used once--e.g. for passing to another
	// function--is:
	//foo, found := c.Get("foo")
	//if found {
	//	MyFunction(foo.(string))
	//}
	//
	//// This gets tedious if the value is used several times in the same function.
	//// You might do either of the following instead:
	//if x, found := c.Get("foo"); found {
	//	foo := x.(string)
	//	// ...
	//}
	//// or
	//var foo string
	//if x, found := c.Get("foo"); found {
	//	foo = x.(string)
	//}
	//// ...
	//// foo can then be passed around freely as a string
	//
	//// Want performance? Store pointers!
	//c.Set("foo", &MyStruct, cache.DefaultExpiration)
	//if x, found := c.Get("foo"); found {
	//	foo := x.(*MyStruct)
	//	// ...
	//}
}
